Jul 5, 2005

Ventricular fibrillation is not provoked by chest compression during post-shock organized rhythms in out-of-hospital cardiac arrest

Erik P Hess, Roger D White


It has been proposed that chest compression (CC) can provoke recurrent ventricular fibrillation (VF) after defibrillation has restored an organized rhythm (OR). If so this would have major implications for proposed changes in resumption of CC after defibrillation, regardless of rhythm. The aim of this study was to examine our defibrillation data for evidence of post-shock CC-induced VF. In a defibrillation program using police/fire personnel entire electrocardiograms (ECGs) from defibrillator data cards were examined for initial and post-shock rhythms and CC artifact. Successful shock rhythms were defined as either asystole or OR in the first five seconds post-shock, the latter as at least two QRS complexes during this time period. Artifact from CC was assessed for association with recurrent VF during either asystole or OR. Among 67 patients (pts) defibrillated by police/fire personnel VF recurred at least once in 35 (52%). Entire ECGs were available in 32 of these 35 pts. Chest compression-associated recurrent VF developed in 16 of 32 patients (50%). A total of 78 VF recurrences were observed during the period prior to administration of epinephrine (adrenaline) or other drugs. During post-shock asystole VF recurred 32 times (4...Continue Reading

Mentioned in this Paper

Acrocallosal Syndrome
Ventricular Fibrillation
Episodic Ataxia Type 1
Emergency Care
Complex (molecular entity)
Recurrent Malignant Neoplasm
Basic Cardiac Life Support
GLI3 gene
Anterior Thoracic Region

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